977231685 has 8 divisors (see below), whose sum is σ = 1563570720. Its totient is φ = 521190224.

The previous prime is 977231681. The next prime is 977231687. The reversal of 977231685 is 586132779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 977231685 - 2² = 977231681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977231681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32574375 + ... + 32574404.

It is an arithmetic number, because the mean of its divisors is an integer number (195446340).

Almost surely, 2^977231685 is an apocalyptic number.

It is an amenable number.

977231685 is a deficient number, since it is larger than the sum of its proper divisors (586339035).

977231685 is a wasteful number, since it uses less digits than its factorization.

977231685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65148787.

The product of its digits is 635040, while the sum is 48.

The square root of 977231685 is about 31260.7051264043. The cubic root of 977231685 is about 992.3522222647.

The spelling of 977231685 in words is "nine hundred seventy-seven million, two hundred thirty-one thousand, six hundred eighty-five".